The Secondary Endpoints are to determine the percentage of major HI-E and minor HI-E after 4 and 6 courses according to IWG 2000, the HI-E IWG 2006 criteria, the duration of erythroid response, the red blood cell transfusion independence at 4 and 6 months, the overall survival and time to IPSS progression and the toxicity (NCI-CTAE).